Hash

The /hash endpoint converts a string into a hash, i.e. a string of characters that cannot be reversed into the original string.

POST/v5/hash

Parameters

Parameter	Required	Description
text	Yes	The string to hash (word, sentence, paragraph, etc.)
method	Yes	The hashing method to use (see available methods below)
encoding	No	Output encoding: hex (default) or base64

Available Methods

Click to expand all available hashing methods

RSA Methods:

• RSA-MD5
• RSA-RIPEMD160
• RSA-SHA1
• RSA-SHA1-2
• RSA-SHA224
• RSA-SHA256
• RSA-SHA3-224
• RSA-SHA3-256
• RSA-SHA3-384
• RSA-SHA3-512
• RSA-SHA384
• RSA-SHA512
• RSA-SHA512/224
• RSA-SHA512/256
• RSA-SM3

Blake Methods:

• blake2b512
• blake2s256

SHA Methods:

• sha1
• sha224
• sha256
• sha384
• sha512
• sha512-224
• sha512-256
• sha3-224
• sha3-256
• sha3-384
• sha3-512

MD5 Methods:

• md5
• md5-sha1
• md5WithRSAEncryption

RIPEMD Methods:

• ripemd
• ripemd160
• ripemd160WithRSA
• rmd160

Other Methods:

• shake128
• shake256
• sm3
• sm3WithRSAEncryption
• ssl3-md5
• ssl3-sha1

RSA Encryption Methods:

• sha1WithRSAEncryption
• sha224WithRSAEncryption
• sha256WithRSAEncryption
• sha384WithRSAEncryption
• sha512WithRSAEncryption
• sha512-224WithRSAEncryption
• sha512-256WithRSAEncryption

PKCS Methods:

• id-rsassa-pkcs1-v1_5-with-sha3-224
• id-rsassa-pkcs1-v1_5-with-sha3-256
• id-rsassa-pkcs1-v1_5-with-sha3-384
• id-rsassa-pkcs1-v1_5-with-sha3-512

Code Examples

curl -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "text": "hello",
    "method": "sha256",
    "encoding": "base64"
  }' \
  "https://api.sylvain.sh/v5/hash"

Response Fields

Field	Type	Description
method	string	Hashing method used
hash	string	Resulting hash string (hex or base64 encoded digest)

Try It

POSThttps://api.sylvain.sh/v5/hash

text*

method*Select...md5sha1sha224sha256sha384sha512sha512-224sha512-256sha3-224sha3-256sha3-384sha3-512blake2b512blake2s256ripemd160shake128shake256

encodingSelect...hexbase64

Error Handling

If parameters are missing or invalid, the API will return an error:

Error Message	Description
Please provide a text (?text={text})	The text parameter is missing
Text is required	The text parameter is empty
Please provide a valid hash algorithm (&method={algorithm})	The method parameter is missing or invalid
Unsupported method. Use one of: {methods}	The method is not a supported hash algorithm
Encoding must be one of: hex, base64	Invalid encoding value